The key to nothing could allude to the concept that to ascend to the highest of the high and become one with 'it/HIM', you must be able to give up EVERYTHING. All dualities, existence, life, memories, time is all based on the division of the whole into the first duality and from then on, the 10,000 things (all existence). In some spiritual practices, the aim is to reunite with the highest of the high and to do that you must reunite with the whole/One/God. In some beliefs, God is the absence of all dualities, timeless, omnipotent. So to cross the final bridge/void/branch/step you must be fully ready to give up who you are, existence, and all concepts of self to reunite. (more of a thought concept, not a cult/social concept).
The knowledge of the particular spiritual practice that achieves the aim, is the "Key to Nothing"
Chapter from the Dao De Qing -
The tao that can be expressed
is not the true Tao
The name that can be named
is not the eternal Name.
The unnamable is the eternally real.
Naming is the origin
of all particular things.
Free from desire, you realize the mystery.
Caught in desire, you see only the manifestations.
Yet mystery and manifestations
arise from the same source.
This source is called darkness.
Darkness within darkness.
The gateway to all understanding.
--Dao De Qing
Further note:
Darkness = Yin
"They eye of yin rewards understanding"
The key to nothing could allude to the concept that to ascend to the highest of the high and become one with 'it/HIM', you must be able to give up EVERYTHING. All dualities, existence, life, memories, time is all based on the division of the whole into the first duality and from then on, the 10,000 things (all existence). In some spiritual practices, the aim is to reunite with the highest of the high and to do that you must reunite with the whole/One/God. In some beliefs, God is the absence of all dualities, timeless, omnipotent. So to cross the final bridge/void/branch/step you must be fully ready to give up who you are, existence, and all concepts of self to reunite. (more of a thought concept, not a cult/social concept).
The knowledge of the particular spiritual practice that achieves the aim, is the "Key to Nothing"
Chapter from the Dao De Qing -
The tao that can be expressed is not the true Tao The name that can be named is not the eternal Name.
The unnamable is the eternally real. Naming is the origin of all particular things.
Free from desire, you realize the mystery. Caught in desire, you see only the manifestations.
Yet mystery and manifestations arise from the same source. This source is called darkness.
Darkness within darkness. The gateway to all understanding.
--Dao De Qing
Further note: Darkness = Yin "They eye of yin rewards understanding"